/****************************************************************************
 *
 * Copyright 2016 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 ****************************************************************************/
/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef __LWIP_IP6_H__
#define __LWIP_IP6_H__

#include <net/lwip/opt.h>
#include <net/lwip/def.h>
#include <net/lwip/pbuf.h>
#include <net/lwip/ipv4/ip_addr.h>

#include <net/lwip/err.h>

#ifdef __cplusplus
extern "C" {
#endif

#define IP_HLEN 40

#define IP_PROTO_ICMP    58
#define IP_PROTO_UDP     17
#define IP_PROTO_UDPLITE 136
#define IP_PROTO_TCP     6

/* This is passed as the destination address to ip_output_if (not
   to ip_output), meaning that an IP header already is constructed
   in the pbuf. This is used when TCP retransmits. */
#ifdef IP_HDRINCL
#undef IP_HDRINCL
#endif							/* IP_HDRINCL */
#define IP_HDRINCL  NULL

#if LWIP_NETIF_HWADDRHINT
#define IP_PCB_ADDRHINT ; u8_t addr_hint
#else
#define IP_PCB_ADDRHINT
#endif							/* LWIP_NETIF_HWADDRHINT */

/* This is the common part of all PCB types. It needs to be at the
   beginning of a PCB type definition. It is located here so that
   changes to this common part are made in one location instead of
   having to change all PCB structs. */
#define IP_PCB struct ip_addr local_ip; \
	struct ip_addr remote_ip; \
	/* Socket options */  \
	u16_t so_options;      \
	/* Type Of Service */ \
	u8_t tos;              \
	/* Time To Live */     \
	u8_t ttl;              \
	/* link layer address resolution hint */ \
	IP_PCB_ADDRHINT

/* The IPv6 header. */
struct ip_hdr {
#if BYTE_ORDER == LITTLE_ENDIAN
	u8_t tclass1:4, v:4;
	u8_t flow1:4, tclass2:4;
#else
	u8_t v:4, tclass1:4;
	u8_t tclass2:8, flow1:4;
#endif
	u16_t flow2;
	u16_t len;				/* payload length */
	u8_t nexthdr;			/* next header */
	u8_t hoplim;			/* hop limit (TTL) */
	struct ip_addr src, dest;	/* source and destination IP addresses */
};

#define IPH_PROTO(hdr) (iphdr->nexthdr)

void ip_init(void);

#include <net/lwip/netif.h>

struct netif *ip_route(struct ip_addr *dest);

void ip_input(struct pbuf *p, struct netif *inp);

/* source and destination addresses in network byte order, please */
err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t proto);

err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t proto, struct netif *netif);

#define ip_current_netif() NULL
#define ip_current_header() NULL

#if IP_DEBUG
void ip_debug_print(struct pbuf *p);
#endif							/* IP_DEBUG */

#ifdef __cplusplus
}
#endif
#endif							/* __LWIP_IP6_H__ */
